Yes

you do need a jacket based on the weather in Sun City Center, FL, USA 1 second ago

Why? Because rain's coming down!
88°F31°C & Rain

Wind is 4 mph7 km/h from the Northeast, gusting to 7 mph12 km/h
September 16
4pm87°F31°C4 mph6 km/h NortheastPartly Cloudy
5pm83°F28°C9 mph15 km/h WestMostly Cloudy
6pm82°F28°C4 mph7 km/h NorthwestMostly Cloudy
7pm81°F27°C5 mph9 km/h NorthCloudy
8pm79°F26°C7 mph11 km/h EastMostly Cloudy
9pm78°F25°C9 mph14 km/h EastMostly Cloudy
10pm77°F25°C9 mph15 km/h EastCloudy
11pm76°F24°C9 mph14 km/h EastMostly Cloudy
September 17
12am75°F24°C8 mph14 km/h EastCloudy
1am75°F24°C7 mph12 km/h EastCloudy
2am74°F23°C6 mph10 km/h EastCloudy
3am74°F23°C6 mph10 km/h EastMostly Cloudy
DateLowHighWindDayNight
September 1673°F23°C89°F31°C4 mph7 km/h from NortheastThunderstormsMostly Cloudy
September 1772°F22°C87°F30°C6 mph10 km/h from EastRainThunderstorms
September 1872°F22°C89°F31°C6 mph10 km/h from NortheastPartly CloudyMostly Clear
September 1973°F23°C89°F32°C9 mph14 km/h from NortheastMostly ClearPartly Cloudy
September 2073°F23°C89°F32°C10 mph16 km/h from NortheastPartly CloudyDrizzle
September 2173°F23°C88°F31°C7 mph12 km/h from NortheastThunderstormsDrizzle
September 2274°F23°C87°F30°C5 mph9 km/h from NorthThunderstormsThunderstorms

No

Low of 73°F23°C, High of 87°F31°C
Wind: 6 mph10 km/h
Precipitation: 44% rain

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